AuthorTopic: Formula Units (Read 28091 times)

Ok, I've done searches and have looked in two different chem books and I can't find anything that seems clear to me. Is a formula unit the same thing as an atom or molecule? For instance... a single formula unit of KI is just a single molecule of KI right?

OOOoooooooohhh, ok, I get it. Covalents are considered molecules but ionics are not. That makes sense. I never knew that. So any time we have polyatomic ions, they are referred to as FU instead of molecules, is that right?